颜色和线强度是可以改变的，由旋转的一个极化滤波器，所以谨慎忠告时，“读出”了观众。
Color and line intensity can be changed by rotating one of the polarized filters, so caution is advised when "reading" the viewer.
讨论了用扇形波导作为旋转模式滤波器的基本原理。
The basic principle of a rotating mode filter with fan-shaped waveguide is presented.
用这种滤波器实现了平移、旋转、尺度三重不变光学图像识别，且有较高的信噪比。
By this filter, the shift, scale and rotation invariant optical pattern recognition was realized with a high signal noise ratio of correlation output.
针对旋转机械振动信号数据采集的特点，提出了用数学形态滤波器实现轴心轨迹提纯的新方法。
Targeting at data acquisition characteristics of vibration signals of rotating machinery, a new rotor orbit purification method using mathematical morphology filters is proposed.
提出一种改进的维纳滤波器(WF)模型，用训练图像的均值合成维纳滤波传递函数中的参考函数，使WF具有了旋转不变识别的能力。
A modified Wiener filter (WF) model was proposed in which the reference term of WF's transfer function was synthesized using the mean of training images.
在同步旋转坐标系下，包含LC低通滤波器的VSC-HVDC系统表现出强耦合、非线性特性，不利于控制器设计。
The strong coupling and nonlinearity of VSC-HVDC system with the LC filter in the synchronous rotating frame brings difficulty to the design of its controller.
提出了在同步旋转坐标系下的电压源型有源电力滤波器简单控制方法。
A simple control method of voltage source shunt active power filters is proposed in the synchronous rotating reference orthogonal coordinate system.
在设计方向滤波器时，对滤波器的旋转引入了方—圆变换的方法，进而减少了计算的复杂度，同时避免引入误差。
While designing orientation filter, we introduced the square-circle transform to rotate filter, thus we reduced computing complexity and avoided imported errors.
通过选择磁场同步旋转坐标系下定子电流和永磁体磁链为状态变量，构建估算转子永磁体磁链幅值和方向的卡尔曼滤波器。
To estimate flux magnitude and direction, a Kalman filter is built by using stator current and PM flux as state variables under magnetic field oriented coordinate.
通过选择磁场同步旋转坐标系下定子电流和永磁体磁链为状态变量，构建估算转子永磁体磁链幅值和方向的卡尔曼滤波器。
To estimate flux magnitude and direction, a Kalman filter is built by using stator current and PM flux as state variables under magnetic field oriented coordinate.
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